In a large pot or Dutch oven, heat the olive oil over medium heat.
Add the diced onion and cook until softened, about 3-4 minutes.
Stir in the minced garlic and diced bell peppers, cooking for another 2 minutes until fragrant.
Sprinkle in cumin, chili powder, and smoked paprika, stirring to toast the spices for about 1 minute.
Add the diced tomatoes with green chilies, chicken broth, shredded chicken, black beans, and corn to the pot.
Bring the soup to a simmer and cook for 15-20 minutes, allowing the flavors to meld together.
Season with salt, pepper, and lime juice, adjusting to taste as necessary.
Before serving, garnish each bowl with freshly chopped cilantro and a few slices of avocado. Serve with tortilla chips on the side for an added crunch.